Ubuntu 22 Remove Redundant Namservers

I have an Ubuntu 22 system set up for STATIC IP and my own DNS server via netplan like:

# This is the network config written by 'subiquity'
network:
  ethernets:
    ens3:
      addresses:
      - 10.0.0.48/24
      dhcp4: no
      dhcp6: no
      nameservers:
        search: [bradgoodman.com]
        addresses: [10.0.0.68]
      routes:
        - to: default
          via: 10.0.0.1
  version: 2

WHen I do a netplan apply DNS stuff in my LOCAL domain works – and my resolvctl data shows me (truncagted):

      Current Scopes: DNS
DefaultRoute setting: yes
       LLMNR setting: yes
MulticastDNS setting: no
  DNSOverTLS setting: no
      DNSSEC setting: no
    DNSSEC supported: no
         DNS Servers: 10.0.0.68
                      2001:558:feed::1
                      2001:558:feed::2
          DNS Domain: bradgoodman.com

And everything works correctly – — for a few seconds – but then like a minute later stuff in my LOCAL domain stops resolving – and resolvectl shows me:

      Current Scopes: DNS
DefaultRoute setting: yes
       LLMNR setting: yes
MulticastDNS setting: no
  DNSOverTLS setting: no
      DNSSEC setting: no
    DNSSEC supported: no
  Current DNS Server: 2001:558:feed::1
         DNS Servers: 10.0.0.68
                      2001:558:feed::1
                      2001:558:feed::2

I don’t know what these whacky 2001:558:feed: entries are – or why it decided to spontaniously use one as my “Current DNS Server” – but either way – stuff doesn’t work – utill I do a netplan apply, afterwhich it works again …. for a few seconds.

Any idea what’s going on??

P.S. My /etc/resolv.conf is the standard:

#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
# 127.0.0.53 is the systemd-resolved stub resolver.
# run "systemd-resolve --status" to see details about the actual nameservers.

nameserver 127.0.0.53
search bradgoodman.com